# ! /usr/bin/sh action=$1 get_modify_time() { stat $1 | grep -Po "Modify: \K[0-9- :]*" } if [ "$action" == "purge" ]; then reference=/var/run/doorpi.pid find records/ -type f ! -newer $reference -delete elif [ "$action" == "clear" ]; then echo "clear" else echo "so what" fi